The study will be carried out in two phases: DQL-BCI will be translated into Turkish and adapted to the cultural context, and the reliability and validity of the Turkish version of DQL-BCI will be investigated. The translation process will be performed in accordance with generally accepted international principles of translation and cultural adaptation of measurement tools. At least 150 subjects with type 2 diabetes will complete the Turkish version of DQL-BCI, the EQ-5D-3L questionnaire and the SF-12 quality of life questionnaire. The examination will provide information about the reliability and the construct validity of the studied tool.
